How to do a minor upgrade of PostgreSQL on Windows, e.g. 9.3.0 to 9.3.1?

Question

What is the recommended way to perform a minor upgrade from PostgreSQL e.g. 9.3.0 to 9.3.1 using the Enterprise DB built windows installer? Should I uninstall first or just install over the existing installation?

The current installation was performed with postgresql-9.3.0-1-windows-x64.exe. Now I want to upgrade using postgresql-9.3.1-1-windows-x64.exe.